[svn-r14903] Undoing change committed in r14902.

2 files changed, 40 insertions, 24 deletions

diff --git a/c++/src/H5Attribute.cpp b/c++/src/H5Attribute.cpp
index 1bca691..043dc4d 100644
--- a/c++/src/H5Attribute.cpp
+++ b/c++/src/H5Attribute.cpp
@@ -131,22 +131,36 @@ void Attribute::read( const DataType& mem_type, void *buf ) const
 ///\exception	H5::AttributeIException
 // Programmer	Binh-Minh Ribler - Apr, 2003
 // Modification
-//		2006/12/9 - H5Aread allocates memory for character string
-//			    buffer with malloc, therefore, no allocation here,
-//			    but HDfree is needed. - BMR
+//	Mar 2008
+//		Corrected a misunderstanding that H5Aread would allocate
+//		space for the buffer.  Obtained the attribute size and
+//		allocated memory properly. - BMR
 //--------------------------------------------------------------------------
 void Attribute::read( const DataType& mem_type, H5std_string& strg ) const
 {
-   char* strg_C;  // temporary C-string for C API
+   // Get the attribute size and allocate temporary C-string for C API
+   hsize_t attr_size = H5Aget_storage_size(id);
+   if (attr_size <= 0)
+   {
+      throw AttributeIException("Attribute::read", "Unable to get attribute size before reading");
+   }
+   char* strg_C = new char [attr_size+1];
+   if (strg_C == NULL)
+   {
+      throw AttributeIException("Attribute::read", "Unable to allocate buffer to read the attribute");
+   }
 
-   // call C API to get the attribute string of chars
-   herr_t ret_value = H5Aread( id, mem_type.getId(), &strg_C);
+   // Call C API to get the attribute data, a string of chars
+   herr_t ret_value = H5Aread(id, mem_type.getId(), &strg_C);
    if( ret_value < 0 )
    {
       throw AttributeIException("Attribute::read", "H5Aread failed");
    }
-   strg = strg_C;	// get 'string' from the C char*
-   HDfree(strg_C);
+
+   // Get 'string' from the C char* and release resource
+   strg_C[attr_size] = '\0';
+   strg = strg_C;
+   delete []strg_C;
 }
 
 //--------------------------------------------------------------------------
diff --git a/c++/src/H5PropList.cpp b/c++/src/H5PropList.cpp
index 136fb3b..76bc089 100644
--- a/c++/src/H5PropList.cpp
+++ b/c++/src/H5PropList.cpp
@@ -25,6 +25,7 @@
 #include "H5Exception.h"
 #include "H5IdComponent.h"
 #include "H5PropList.h"
+#include "H5private.h"		// for HDfree
 
 #ifndef H5_NO_NAMESPACE
 namespace H5 {
@@ -157,7 +158,7 @@ void PropList::copyProp(PropList& dest, const char *name) const
 /// 		It differs from the above function only in what arguments it
 ///		accepts.
 ///\param	dest - IN: Destination property list or class
-///\param	name - IN: Name of the property to copy - \c std::string
+///\param	name - IN: Name of the property to copy - \c H5std_string
 // Programmer	Binh-Minh Ribler - Jul, 2005
 //--------------------------------------------------------------------------
 void PropList::copyProp( PropList& dest, const H5std_string& name ) const
@@ -194,7 +195,7 @@ void PropList::copyProp( PropList& dest, PropList& src, const char *name ) const
 ///		accepts. - Obsolete
 ///\param	dest - IN: Destination property list or class
 ///\param	src  - IN: Source property list or class
-///\param	name - IN: Name of the property to copy - \c std::string
+///\param	name - IN: Name of the property to copy - \c H5std_string
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 void PropList::copyProp( PropList& dest, PropList& src, const H5std_string& name ) const
@@ -273,7 +274,7 @@ bool PropList::propExist(const char* name ) const
 ///\brief	This is an overloaded member function, provided for convenience.
 /// 		It differs from the above function only in what arguments it
 ///		accepts.
-///\param	name - IN: Name of property to check for - \c std::string
+///\param	name - IN: Name of property to check for - \c H5std_string
 // Programmer:  Binh-Minh Ribler - April, 2004
 //--------------------------------------------------------------------------
 bool PropList::propExist(const H5std_string& name ) const
@@ -326,7 +327,7 @@ void PropList::getProperty(const char* name, void* value) const
 ///   		It differs from the above function only in what arguments it
 ///		accepts.
 ///\param	name -  IN: Name of property to query - \c char pointer
-///\return	The property that is a \c std::string.
+///\return	The property that is a \c H5std_string.
 ///\exception	H5::PropListIException
 // Programmer:  Binh-Minh Ribler - April, 2004
 //--------------------------------------------------------------------------
@@ -343,7 +344,7 @@ H5std_string PropList::getProperty(const char* name) const
    }
 
    // Return propety value as a string after deleting temp C-string
-   H5std_string prop_strg = H5std_string(prop_strg_C);
+   H5std_string prop_strg(prop_strg_C);
    delete []prop_strg_C;
    return (prop_strg);
 }
@@ -352,7 +353,7 @@ H5std_string PropList::getProperty(const char* name) const
 ///\brief	This is an overloaded member function, provided for convenience.
 ///   		It differs from the above function only in what arguments it
 ///		accepts.
-///\param	name -   IN: Name of property to query - \c std::string
+///\param	name -   IN: Name of property to query - \c H5std_string
 ///\param	value - OUT: Pointer to the buffer for the property value
 // Programmer:  Binh-Minh Ribler - April, 2004
 //--------------------------------------------------------------------------
@@ -365,8 +366,8 @@ void PropList::getProperty(const H5std_string& name, void* value) const
 ///\brief	This is an overloaded member function, provided for convenience.
 ///   		It differs from the above function only in what arguments it
 ///		accepts.
-///\param	name -  IN: Name of property to query - \c std::string
-///\return	The property that is a \c std::string.
+///\param	name -  IN: Name of property to query - \c H5std_string
+///\return	The property that is a \c H5std_string.
 // Programmer:  Binh-Minh Ribler - April, 2004
 //--------------------------------------------------------------------------
 H5std_string PropList::getProperty(const H5std_string& name) const
@@ -402,7 +403,7 @@ size_t PropList::getPropSize(const char *name) const
 ///\brief	This is an overloaded member function, provided for convenience.
 /// 		It differs from the above function only in what arguments it
 ///		accepts.
-///\param	name - IN: Name of property to query - \c std::string
+///\param	name - IN: Name of property to query - \c H5std_string
 ///
 // Programmer:  Binh-Minh Ribler - April, 2004
 //--------------------------------------------------------------------------
@@ -421,12 +422,13 @@ size_t PropList::getPropSize(const H5std_string& name) const
 H5std_string PropList::getClassName() const
 {
    char* temp_str;
-   temp_str = H5Pget_class_name(id);
+   temp_str = H5Pget_class_name(id); // this API specified that temp_str must
+				     // be freed.
 
    if (temp_str != NULL)
    {
-      H5std_string class_name = H5std_string(temp_str);
-      free(temp_str);
+      H5std_string class_name(temp_str);
+      HDfree(temp_str);
       return(class_name);
    }
    else
@@ -489,7 +491,7 @@ void PropList::setProperty(const char* name, const char* charptr) const
 /// 		It differs from the above function only in what arguments it
 ///		accepts.
 ///\param	name - IN: Name of property to set - \c char pointer
-///\param	strg - IN: Value for the property is a \c std::string
+///\param	strg - IN: Value for the property is a \c H5std_string
 // Programmer:  Binh-Minh Ribler - April, 2004
 //--------------------------------------------------------------------------
 void PropList::setProperty(const char* name, H5std_string& strg) const
@@ -502,7 +504,7 @@ void PropList::setProperty(const char* name, H5std_string& strg) const
 ///\brief	This is an overloaded member function, provided for convenience.
 /// 		It differs from the above function only in what arguments it
 ///		accepts.
-///\param	name  - IN: Name of property to set - \c std::string
+///\param	name  - IN: Name of property to set - \c H5std_string
 ///\param	value - IN: Void pointer to the value for the property
 // Programmer:  Binh-Minh Ribler - April, 2004
 //--------------------------------------------------------------------------
@@ -516,7 +518,7 @@ void PropList::setProperty(const H5std_string& name, void* value) const
 ///\brief	This is an overloaded member function, provided for convenience.
 /// 		It differs from the above function only in what arguments it
 ///		accepts.
-///\param	name - IN: Name of property to set - \c std::string
+///\param	name - IN: Name of property to set - \c H5std_string
 ///\param	strg - IN: Value for the property is a \c std::string
 // Programmer:  Binh-Minh Ribler - April, 2004
 //--------------------------------------------------------------------------
@@ -569,7 +571,7 @@ void PropList::removeProp(const char *name) const
 ///\brief	This is an overloaded member function, provided for convenience.
 /// 		It differs from the above function only in what arguments it
 ///		accepts.
-///\param	name - IN: Name of property to remove - \c std::string
+///\param	name - IN: Name of property to remove - \c H5std_string
 // Programmer:  Binh-Minh Ribler - April, 2004
 //--------------------------------------------------------------------------
 void PropList::removeProp(const H5std_string& name) const